Add basic feedback API tests.
Getting started on feedback tests. We'll need more refactoring of feedback code to write more meaningful tests, till then, at least check in basic tests.

R=mpcomplete@chromium.org
BUG=263582

Review URL: https://chromiumcodereview.appspot.com/24020006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@224902 0039d316-1c4b-4281-b951-d872f2087c98
wifi icon centered when vertically aligned.

BUG=292907

Review URL: https://chromiumcodereview.appspot.com/24067007

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@224903 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 224903